Load Characteristics of Event Handling Triggered by Dynamic Actions in Dense UI Pages

Abstract

Dynamic Actions enable responsive, event-driven interface behaviors in Oracle APEX applications, but their cumulative impact on performance increases significantly in dense UI environments. This study evaluates how the number, structure, and interdependency of Dynamic Actions influence client-side processing load, asynchronous request patterns, and backend computation activity. Experimental analysis across low, medium, and high-density page configurations shows that increased Dynamic Action complexity leads to non-linear growth in event propagation latency, queue formation within the browser event loop, and elevated session state evaluation at the application and database tiers. These impacts arise not from individual actions, but from the interaction topology that forms as UI components become interlinked through refresh cascades and conditional state transitions. The results highlight the importance of managing event dependencies, reducing redundant refresh operations, and architecting UI logic with explicit attention to event frequency and state evaluation pathways. This work provides a structured basis for performance-aware UI design strategies in Oracle APEX applications intended for high-interaction or high-concurrency operation.